python爬取豆瓣图书

import requests
from bs4 import BeautifulSoup
import lxml
base_url="https://book.douban.com/top250?"
headers={
     'user-agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36 Edg/131.0.0.0'

}
with open("豆瓣图书2.csv","w",encoding="utf-8") as pf:
    for start in range(0,226,25):
        params={
            "start":start
        }
        response=requests.get(url=base_url,params=params,headers=headers)
        content=response.text
        soup=BeautifulSoup(content,'lxml')
        books=soup.find_all('table')
        for book in books:
            title=book.div.a.get_text().replace('\n','').replace(' ',' ')
            info_list=book.p.string
            pingfen=book.select('span[class="rating_nums"]')[0].get_text()
            pf.write(title+","+info_list+","+pingfen+"\n")